Calosoma (Calopachys) bulleri Beheim & Breuning, 1943

Calosoma (Blaptosoma) bulleri Beheim & Breuning, 1943: 23 (described from: Jalisco); original material: holotype ♀ and 2 paratypes ♀♀ (from Guadalajara and Mascota); syntype ♀ (from Guadalajara) in Naturalis Biodiversity Centre, Leiden (de Boer, 2002: 37)
Calosoma (Carabomimus) bulleri Gidaspow, 1959: 298
Carabomimus bulleri Lassalle & van den Berghe, 2011b: 299

Length 17-20 mm. This species, as was also emphasized by the authors in the original description, presents a striking resemblance to Calopachys omiltemium. In fact, its pronotum is clearly hearth shaped, the sculpture of the elytra is characterized by having the interval of the same height and width, with few small foveae, the color of the upper body is a shining blu-violet.
Originally bulleri was attributed by its descriptors to the subgenus Blaptosoma, to which in the view of Breuning (1928: 55) should also have belong omiltemium. Later Gidaspow (1959: 298), following the revision of Jeannel (1940), accepted the subgenus Calopachys in which she included omiltemium and others, but she placed bulleri in the subgenus Carabomimus because of the rear angles of the pronotum that are projecting beyond the basal line.
Considering the features that approach this species to Calopachys, doubts about the systematic position of bulleri were also expressed by some recent authors who have dealt with the issue (Korell & Frisch, 2004: 53; Lassalle & van den Berghe, 2011b: 299).
We share these doubts and believe that the species, if you do not attribute crucial importance to the shape of rear angles of the pronotum, should be placed, provisionally at least, in the subgenus Calopachys. Calopachys would be mantained distinct from Carabomimus because of the pronotum significantly narrow in the posterior part and the elongated elytra . However, we agree that, without knowing the shape of male genitalia, it is impossible to formulate a definitive opinion, as correctly concluded also Lassalle & van den Berghe (2011b: 299).
bulleri was described on three ♀ ♀ specimens from Jalisco (Guadalajara and Mascota). It seems that further specimens would have been subsequently collected in the Sierra Manantlan, on the side of Jalisco, and on the opposite one, in the state of Colima (Cerro Grande). They should be preserved in Cornell University Insect Collection (Ball in litteris), but up to now they have not been published.
The species has been dedicated to its collector, an unidentified Dr. Buller.

Examined specimens and literature’s data
Mexico. Jalisco: Guadalajara (sintype, NBC)

Calosoma (Calopachys) bulleri
Beheim & Breuning, 1943
Mexique, Jalisco, Guadalajara
(holotype of Calosoma (Blaptosoma) bulleri)
(Zoölogisch Museum, Universiteit van Amsterdam)
(photo B. Lassalle)
last review April 22 2019